# Senior Software Engineer I - Reliability at Wise

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Identify and implement reliability, perf

- **Company:** Wise (https://jobs.trythestack.co/companies/wise)
- **Location:** London, United Kingdom
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 5–10 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Software Engineering, Reliability Engineering, Microservices, Kubernetes, Cloud-based Architecture, Java, Backend Development, Resiliency Patterns, Observability, Database Troubleshooting, Performance Optimization, Automation, System Design, Capacity Planning, Autoscaling, Collaboration
- **Posted by employer:** 2026-09-15
- **Added to The Stack:** 2026-09-16
- **Listed until:** 2026-11-14
- **Status:** Active
- **Apply:** https://jobs.smartrecruiters.com/Wise/744000149677359-senior-software-engineer-i-reliability (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/senior-software-engineer-i-reliability-wise

## About the role

Responsibilities:
- Identify and implement reliability, performance and compliance improvements across critical backend microservices.
- Design and deliver reusable, automated solutions for capacity, autoscaling, resiliency and redundancy.
- Deep-dive into teams' services to diagnose failures, improve observability and implement corrective changes.
- Profile systems (CPU, memory, I/O) and drive performance optimisations across services and libraries.
- Collaborate with product and platform teams to prioritise reliability work and embed best practices.

Requirements:
- Strong software engineering background with product-focused experience.
- Hands-on experience with microservices running in Kubernetes and cloud environments.
- Proficiency in a backend language (Java or equivalent) and production debugging/troubleshooting skills.
- Experience with observability, monitoring and capacity planning; able to measure impact and drive improvements.
- Excellent collaboration skills and the ability to influence cross-functional teams. Openness to learn missing skills on the job.

## Responsibilities

You will identify and implement reliability, performance, and compliance improvements across critical backend microservices. This involves collaborating with cross-functional teams to develop resilient strategies and reusable design solutions.

## Requirements

The role requires a strong background in software engineering with experience in microservices, Kubernetes, and cloud-based architectures. Candidates should possess hands-on experience in Java or similar backend languages and a proven ability to troubleshoot complex system issues.

## FAQ

- **Is this Senior Software Engineer I - Reliability role still open?** It was posted on 2026-09-15. Listings more than 30 days old may no longer be active, so check Wise's site before applying.
- **Does Wise offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Wise's site.
- **Where is this role located?** The listing gives the location as London, United Kingdom. It is marked on-site.
- **What skills does this role ask for?** The listing names: Software Engineering, Reliability Engineering, Microservices, Kubernetes, Cloud-based Architecture, Java, Backend Development, Resiliency Patterns, Observability, Database Troubleshooting, Performance Optimization, Automation, System Design, Capacity Planning, Autoscaling, Collaboration.

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## Notes for agents

- Apply on the employer's page (https://jobs.smartrecruiters.com/Wise/744000149677359-senior-software-engineer-i-reliability). The Stack does not take applications.
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- Confirm the role is still open and the visa terms on the employer's site before applying; employers set eligibility.
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